[internal] scala: generate the JVM names seen by Java code for Scala code #13696
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I presume you've verified that this is what the language spec states? |
See the referenced issue, there is no language spec covering this as it is a pure implementation detail. I used https://github.com/travisbrown/scala-java-interop/blob/master/src/main/java/demo/UsingScala.java as a reverse engineered reference plus my own experience with Scala. I assume that this code will need adjustment as we find different uses cases of Scala from Java. |
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Dec 7, 2021
Internal changes: * [internal] Remove superfluous f-string specifiers ([#13821](#13821)) * [internal] scala: extract annotations as consumed types ([#13810](#13810)) * [jvm] Split nailgun digest from input file digests ([#13813](#13813)) * [internal] jvm: add jre_major_version and use stderr to properly extract version ([#13812](#13812)) * [internal] Clean up Go `embed` support's handling of dependencies ([#13801](#13801)) * [internal] scala: handle package object syntax in parser ([#13809](#13809)) * [internal] java: fix junit sentinel rule setup ([#13815](#13815)) * [internal] upgrade to rust v1.57.0 ([#13807](#13807)) * [internal] add failing test for FrozenDict equality issue ([#13389](#13389)) * [internal] Use `PyObject` instead of `Value` in more places ([#13802](#13802)) * Remove MultiPlatform Process abstractions ([#12725](#12725)) * [internal] add `JvmToolBase` for lockfile handling for JVM tools ([#13777](#13777)) * [internal] Port `MergeDigests` to Rust ([#13773](#13773)) * [jvm] Spawn nailgun servers outside the pool lock ([#13796](#13796)) * [internal] DRY loading internal Go binaries ([#13800](#13800)) * [internal] Convert unit tests to use pytest ([#13798](#13798)) * [internal] remove dead code - socket util. ([#13797](#13797)) * [internal] Reorganize Go parser scripts ([#13791](#13791)) * Adds Jackson core/datatype to `JVM_ARTIFACT_MAPPINGS` ([#13792](#13792)) * [internal] go: initial support for embedding resources ([#13743](#13743)) * [internal] Refer to `go.mod` path when downloading packages ([#13786](#13786)) * [internal] More robust Go dependency inference tests ([#13785](#13785)) * [internal] `tailor` doesn't add `go_package` for `testdata` folder ([#13783](#13783)) * [internal] Add Scala backend to dryrun for wheel builds. ([#13772](#13772)) * [internal] Unify JVM thirdparty resolves ([#13771](#13771)) * [internal] scala: infer dependencies from consumed symbols and intermediate scopes ([#13758](#13758)) * [internal] java: infer scala encoded symbols ([#13739](#13739)) * [internal] scala: parse and report package scopes ([#13738](#13738)) * [internal] go: configure included env vars for `GoSdkProcess` ([#13734](#13734)) * Fix some `./cargo audit` vulnerabilities. ([#13728](#13728)) * [internal] fix non-empty __init__.py ([#13730](#13730)) * Compute RepositoryPex directly from addresses. ([#13716](#13716)) * Upgrade to cargo-audit 0.16.0. ([#13729](#13729)) * Simplify `NativeHandler`. ([#13727](#13727)) * [internal] Switch to a maintained fork of the `fuse` crate for `brfs`. ([#13679](#13679)) * [internal] Add infrastructure to support deprecating field names ([#13666](#13666)) * [internal] Introduce OptionalPex/OptionalPexRequest. ([#13712](#13712)) * [internal] tailor adds go_package targets ([#13703](#13703)) * [internal] Remove unused testproject for pants-plugin ([#13704](#13704)) * [internal] Rename ambiguous `subpath` variable for Go code ([#13701](#13701)) * [internal] scala: generate the JVM names seen by Java code for Scala code ([#13696](#13696)) * Use RequirementsPexRequest in run_pex_binary.py. ([#13693](#13693)) * [internal] Refactor finding owning `go_mod` for first-party packages ([#13695](#13695)) * [internal] repl: add append_only_caches / run_in_workspace attributes to ReplRequest ([#13599](#13599)) * [internal] switch back to official `cargo-ensure-prefix` crate ([#13692](#13692)) * [internal] scala: extract type names from all Type.* AST nodes ([#13685](#13685)) * [internal] Convert unit tests to use pytest ([#13652](#13652)) * Unblock codegen support for java export analysis (#13645) ([#13675](#13675)) * [internal] upgrade to Rust 2021 Edition ([#13644](#13644)) * [internal] Don't store derived values on `go_first_party_package` targets ([#13676](#13676)) * Upgrade to py03 0.15.1. ([#13725](#13725)) * Add PyPDF2 to module mapping ([#13717](#13717)) * Upgrade console and indacatif. ([#13726](#13726))
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As described in #13662, Java code that tries to import Scala symbols is not having that dependency inferred by Pants. The cause is that the Scala backend does not expose the transformed names seen by Java code for Scala symbols.
For example, the instance for
object Fooin packageorg.pantsbuild.exampleis actuallyorg.pantsbuild.example.Foo$.MODULE$.This PR is the first step in solving this by generating the transformed names as part of source analysis. Only the
objectcase is handled for now. A subsequent PR will use this information for Java dependency inference.[ci skip-rust]